Best year time to visit Post Island

General weather information about Post Island

Average annual temperature is 11.5 °C

Absolute maximum temperature: 31.9 °C

Absolute minimum temperature: -24.0 °C

Number of sunny days: 163 days

Number of rainy days: 190 days

Number of snow days: 12 days

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* Weather data for Post Island United States is based on climate observations for 2026 year

Post Island air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)12.215.715.429.329.729.631.229.131.927.018.815.9
Average daytime temperature (°C)6.06.27.814.320.422.428.025.422.618.79.57.9
Average temperature (°C)2.81.43.89.814.617.923.721.119.014.35.24.2
Average night temperature (°C)-0.2-2.80.36.19.714.319.817.416.010.91.71.5
Absolute minimum temperature (°C)-5.4-24.0-3.4-2.64.19.015.014.010.43.7-3.8-6.1

Post Island monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.011.012.014.015.015.015.014.013.011.010.09.0
Daylight mean duration (h)9.510.611.913.414.615.214.913.912.511.19.89.1
Daylight minimum duration (h)9.09.011.012.014.015.014.013.011.010.09.09.0
Sunshine mean duration (h)3.96.27.48.611.69.711.29.67.67.76.95.3
Precipitation (mm)1645312850741371561241828447170
Sunny days912141620881111172215
Rainy days17121614112223201914715
Snow days541000000011

Post Island - weather forecast by months

Post Island weather in januaryPost Island weather in februaryPost Island weather in marchPost Island weather in aprilPost Island weather in mayPost Island weather in junePost Island weather in julyPost Island weather in augustPost Island weather in septemberPost Island weather in octoberPost Island weather in novemberPost Island weather in december

Best time to visit Post Island:

The best time to visit Post Island during the most sunny months:

  • May — 11.6(h)
  • July — 11.2(h)

The largest precipitation sum in Post Island is at

  • January — 164(mm)
  • July — 156(mm)
  • September — 182(mm)
  • December — 170(mm)

    • Weather forecast in the closest to Post Island admin centers

    Weather forecast in the closest towns to Post Island

    Explore Post Island

    See also
    MapTrains schedule
    Plan your trip
    AccommodationExperiencesBlog

    Frequently asked questions

    When is the best time to visit Post Island?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Post Island.
    What is the weather like in Post Island?
    See average temperature, rainfall and daylight hours for Post Island by month in the table above.
    How many sunny days does Post Island have?
    The monthly weather statistics above show sunshine and rainfall patterns for Post Island throughout the year.